Physical Security ■ Speed is critical to establishing physical barriers against an intruder, so classroom locks should enable rapid lockdown while still ensuring quick release and free egress in an emergency. ALERRT page 46 (Evergreen HS), PASS page 124, ASIS page 42, Sandy Hook page 56, MSD page 346, Robb page 477, FED page 124 ■ To enable teachers to secure rooms quickly without stepping into the hall, classroom doors should be lockable from inside by key, push button, or thumb turn. Sandy Hook page 56, MSD page 346, FED page 124, PASS Page 124, ASIS page 40 ■ To allow administration or law enforcement to access locked classrooms in an emergency, locks on classroom doors should be able to open from outside with a key, credential, or other approved means. FED page 124, PASS page 124, ASIS page 42, model codes including IFC, IBC, and NFPA, Sandy Hook page 53 ■ To prevent inadvertent security failures, all doors must close and latch properly. ■ Classrooms with connecting doors must be able to lock down in an emergency so each room can be fully secured and to prevent an intruder from moving between spaces. Robb page 9, ASIS page 43 ■ To make doors return to a secure state automatically, use door closers on classrooms so doors automatically close, latch, and lock. Sandy Hook page 57, MSD page 346, ASIS page 42 ■ To reduce confusion and speed occupant response, locks should have visual indicators so room occupants can see whether the door is locked or unlocked. PASS page 126, ASIS page 42 Recommended functionality of classroom locks Easy to lock and quick egress Outside access for emergency Visual indicators recommended Lockable from inside the room Comply with codes & requirements 1 2 3 4 5 TSU ALERRT Center Research pages 17 & 22 Turning Complex Standards into Actionable Security 22